EP2303559B3 - Panneau sandwich et procédé de production d'un panneau de ce type - Google Patents

Panneau sandwich et procédé de production d'un panneau de ce type Download PDF

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Publication number
EP2303559B3
EP2303559B3 EP09788236.9A EP09788236A EP2303559B3 EP 2303559 B3 EP2303559 B3 EP 2303559B3 EP 09788236 A EP09788236 A EP 09788236A EP 2303559 B3 EP2303559 B3 EP 2303559B3
Authority
EP
European Patent Office
Prior art keywords
core element
following
flexible material
strip
strips
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP09788236.9A
Other languages
German (de)
English (en)
Other versions
EP2303559A2 (fr
EP2303559B1 (fr
Inventor
Johannes Hendricus Alphonsus Peeters
Cornelis Henricus Honselaar
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FiberCore IP BV
Original Assignee
FiberCore IP BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FiberCore IP BV filed Critical FiberCore IP BV
Priority to SI200930270T priority Critical patent/SI2303559T1/sl
Priority to PL09788236.9T priority patent/PL2303559T6/pl
Publication of EP2303559A2 publication Critical patent/EP2303559A2/fr
Application granted granted Critical
Publication of EP2303559B1 publication Critical patent/EP2303559B1/fr
Publication of EP2303559B3 publication Critical patent/EP2303559B3/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
    • B29C70/865—Incorporated in coherent impregnated reinforcing layers, e.g. by winding completely encapsulated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D24/00—Producing articles with hollow walls
    • B29D24/002—Producing articles with hollow walls formed with structures, e.g. cores placed between two plates or sheets, e.g. partially filled
    • B29D24/008—Producing articles with hollow walls formed with structures, e.g. cores placed between two plates or sheets, e.g. partially filled the structure having hollow ridges, ribs or cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/001—Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings
    • B29D99/0021—Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings provided with plain or filled structures, e.g. cores, placed between two or more plates or sheets, e.g. in a matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B32B37/1018—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using only vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/18—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of discrete sheets or panels only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/08—Impregnating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/772—Articles characterised by their shape and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/22—Fibres of short length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities

Definitions

  • the invention relates to sandwich panels of fiber-reinforced plastics materials, which are particularly suitable for relatively high loads.
  • sandwich panels are cited which can be used for the deck of a bridge or as a self-supporting bridge construction.
  • the panel must be able to withstand the heavy loads of road traffic.
  • These loads take different forms. It is firstly a matter of the total weight of traffic present on a bridge, which manifests itself in bending and torsion of the panel between the supports thereof.
  • account must be taken of local loads, such as caused by the wheel load of heavy freight traffic, to which the surface of the sandwich panel, in particular, is exposed.
  • bridge decks from materials other than steel or concrete are sought.
  • One example of such an alternative is provided by the bridge decks produced from fiber-reinforced plastics laminates.
  • Such a bridge deck can be produced with suitable templates in a variety of different forms.
  • the total resistance of such a bridge deck with regard to general bending and torsion is excellent, such that panels produced in this way could withstand the heaviest loads of heavy freight traffic.
  • a drawback of fiber-reinforced plastic laminates is however their relatively low resistance to local loads or point loads, that is to say a static load or an impact load. It is precisely such loads which can cause damage in the panel, resulting in a delamination or detachment of the outer skin from the sandwich panel which gets progressively worse under the influence of the passing traffic.
  • a panel having mutually averted panel surfaces and a periphery which delimits the panel surfaces, comprising a series of parallelly positioned, elongated core elements, as well as material strips when are affixed to the core elements and which each extend between respectively two neighboring core elements and along both panel surfaces, is known from WO-A-9009880 which discloses the features of the preamble of claim 1.
  • the sole object which is aimed for with this known construction is the enlargement of the contact surface between the web plates and the skin.
  • the object of the invention is to provide a sandwich panel which is made up of fiber-reinforced plastic components and which nevertheless meets the requirements with regard to point and impact loads. This object is achieved by virtue of the fact that those portions of the material strips which extend along the panel surfaces extend over a plurality of core elements.
  • a series of parallelly positioned core elements is meant a multiplicity of core elements which are located side by side and/or one upon the other, such that the product thus formed has a width and/or height amounting to a multiple of the width and/or height of a core element.
  • the cores and the material strips can be loosely stacked.
  • a glue, or a mechanicaljoint, can here possibly be used to obtain a temporary connection.
  • the material strips are affixed to the core elements, that is to say following injection and setting of the resin.
  • the panel according to the invention consists of a large number of core elements extending parallelly alongside one another, which are mutually connected by the material strips which extend over, under and between the core elements.
  • the panel surfaces (the skins) and surfaces extending between respectively two neighboring core elements (the web plates) of the sandwich panel are made up of the same material strips.
  • a distinction can always at least partially be drawn between material strips used for the web plates, on the one hand, and material strips used for the skins, on the other hand.
  • such a construction according to the invention ensures a particularly robust mutual connection of the core elements and skins.
  • the skins thus formed and the ribs formed between the core elements are integrally connected to one another.
  • the ribs merge directly into the skins, which skins consist of those parts of the material strips, stacked obliquely one above the other, which extend over the panel surfaces. There is hence no danger of delamination between the ribs and the skins. Consequently, the panel which is thus obtained can comfortably meet the requirements with regard to bending and torsion and impact load.
  • the core elements which are here used can possess different cross sectional forms, such as square, rectangular, but triangular cross sectional forms are also possible. In this last variant, including viewed in the transverse direction of the sandwich panel, the forces can be readily transmitted.
  • the core elements can be of tubular construction, though solid core elements may also be used.
  • the panel surfaces of the panel thus obtained are formed by the core elements, as well as by those portions of the various material strips which extend thereover. These material strips are stacked one upon the other; the number in the stack can be varied by adjusting the width, that is to say the dimension of material strips transversely to the longitudinal direction of the core elements. If now a large local load or point load is applied to such a sandwich panel, such as caused, for example, by the above-described falling-off freight, the surface of the sandwich panel can get damaged. This implies that locally the material strips are damaged and that possibly one or some of the core elements are likewise damaged.
  • the important advantage of the sandwich panel according to the invention is, however, that this damage has a very local character and does not display a tendency to spread over the rest of the construction. Even though one or some material strips and core elements are locally damaged, because the rest of the material strips and core elements, that is to say in the transverse direction beyond the damage, remains intact, those parts of the material strips which are found there are capable of maintaining the integrity of the panel in the direction of overstress.
  • the material strips can extend in a variety of ways relative to the core elements. According to a first option, the material strips can each comprise a portion located between two neighboring core elements, a portion extending over one neighboring element and along one panel surface, as well as a portion extending over the other neighboring core element and along the other panel surface. In such a case, the material strips possess essentially a Z-shape.
  • the material strips can each extend over one and the same neighboring element and along both panel surfaces.
  • the material strips possess essentially tilted U-shape.
  • those portions of the material strips which are located along the panel surfaces extend over a plurality of core elements.
  • the material strips forming the panel surface describe an angle of inclination of 20 degrees or less relative to the transverse direction of the panel.
  • material strips can comprise a portion located between two neighboring core elements and extending only over a portion of these core elements, as well as a portion extending only along a panel surface.
  • core elements close to both panel surfaces can be provided with material strips, which comprise a portion located between two neighboring core elements and extending only over a portion of these core elements, as well as a portion extending only along a panel surface.
  • the invention further relates to a method for producing a panel, such as for a bridge deck, comprising the following steps:
  • This method is characterized by the fitting of the following strip of flexible material over the top face of a following core element, as well as over the preceding strip of flexible material extending over the top face of a preceding core element.
  • a panel which consists of a large number of core elements extending parallelly alongside one another, which are mutually connected by the strips of flexible material folded essentially into a Z-shape, which extend over, under and between the core elements.
  • the method according to the invention can be implemented in a variety of ways; preferably, however, a template is used herein.
  • the method comprises the following steps:
  • the shape of the template is here pre-chosen such that the desired shape of the panel is obtained, for example with a slight curvature in the longitudinal direction, in the transverse direction, etc.
  • the panel surfaces of the panel are formed by the core elements and by the strips of flexible material extending thereover.
  • the total thickness of these surfaces of the panels can be enlarged by making the various strips of flexible material extend more or less far over one another. If, for example, each strip of flexible material extends over three or more core elements, a triple-layered or multilayered surface is also formed. As already stated, this is obtained by the step of:
  • the thickness of the surface can thus be influenced by the step of:
  • the strength and stiffness characteristics of the panel are influenced by the nature of the strips of flexible material.
  • the method according to the invention can here comprise the steps of using strips of flexible material which comprise a fabric, and of aligning the threads in the longitudinal direction of the core elements.
  • the method according to the invention can comprise the steps of using strips of flexible material which comprise a fabric, and of aligning the threads of the fabric in the transverse direction of the core elements.
  • a variant of the method for producing a panel comprises the following steps:
  • This method is characterized by the fitting of the following strip of flexible material over a following core element, as well as over the preceding strip of flexible material extending over a preceding core element.
  • this method can be implemented with the following steps:
  • Figure 1 shows a portion of a template 4, having a form face 3.
  • a first core element 1 which is tubular and consists of the top wall 5, the right-hand side wall 6, the bottom wall 7 and the left-hand side wall 8.
  • the core element 1 is covered with a strip of impregnable flexible material 2.
  • This strip of flexible material 2 has an uppermost portion 9 which is laid over the top wall 5, a centermost portion 10 which is laid against the right-hand side wall 6, and a lowermost portion 11 which is laid over the floor 3 of the template 4.
  • the strip of flexible material 2 has thereby acquired a Z-shape.
  • the portion 10' of the following strip of flexible material 2' is laid over the right-hand side wall 6' of the following core element 1' and, finally, the portion 11' of the following strip of flexible material 2' is laid over the floor 3 of the template 4.
  • This portion 1 1' of the following strip of flexible material 2' extends under a plurality of following core elements 1", etc.
  • Figure 2 shows an alternative embodiment, wherein the uppermost portion 9 of the strip of flexible material is laid over the core element 1, the centermost portion 10 extends over the left-hand side wall 8, and the lowermost portion 11 extends under the bottom wall 7 of this same core element 1.
  • the strips of flexible material in these are thus shaped according to a tilted U.
  • Figure 3 shows that the core elements 1 can also possess a triangular shape.
  • Figures 4-6 show a possible way of producing the embodiment of figure 2 .
  • a first core element I is first put in place, over the top face 5 of which a strip of flexible material 1 is laid.
  • a following core element 1' is placed, with thereover a following strip of flexible material 2'.
  • These actions are repeated until a stack 12 of the desired height is obtained.
  • This stack is formed by all the core elements 1, 1', 1", ... and the intervening parts 10, 10', 10" ... of the strips of flexible material 2, 2', 2", ....
  • the parts 9, 9', 9", ... and 11, 11', 11", ... still extend freely beyond the stack 12.
  • the template 13 Over this stack is then placed the template 13, the internal contour of which conforms to the shape of the end product which is ultimately to be formed.
  • the template When the template is pushed onto the stack 12, those parts 9, 9', 9", ... and 11, 11', 11", ... of the strips of flexible material 2, 2', 2", ... which are located beyond the stack 12 are shaped and pressed against the stack 12.
  • the strips offlexible material are impregnated; following hardening of these strips, the end product 14 is obtained.
  • material strips 2 are used possessing a single portion 9, 11 which covers a top wall 5 and bottom wall 6 of the core elements 1, as well as a centermost portion 10 which is located between the core elements 1 and extends only over a portion of these core elements. These centermost portions 10 are connected to each other by the connecting strips 15.
  • figure 8 is broadly consistent with that of figure 7 , though the centermost portion 10 is now folded in two and folded back.
  • the connecting strips can in this case be present.
  • material strips 2 are used having a single portion 9, 11, which is located along a top wall 5 and bottom wall 6 respectively of the core elements and extends over a plurality of core elements.
  • the middle portion 10 extends over the entire height between the core elements, while, on the rim thereof opposite the rim where the single portion 19 is, a small bent-over portion is present, which extends only over a part of a core element.
  • the middle portions 10 extend over virtually the entire height between the core elements 1, while the material strips 2 possess only a single portion 9 and 11 respectively, which extends over the top face 5 and bottom face 6 respectively.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Composite Materials (AREA)
  • Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Panels For Use In Building Construction (AREA)
  • Bridges Or Land Bridges (AREA)

Claims (15)

  1. Panneau ayant des surfaces de panneau mutuellement inversées et une périphérie qui délimite les surfaces du panneau, comprenant une série d'éléments d'âme (1, 1', 1", ...) allongés disposés parallèlement, ainsi que des bandes de matériau (2, 2', 2", ...) qui comprennent chacune une partie située entre respectivement deux éléments d'âme proches et au moins une partie s'étendant le long d'une des surfaces du panneau, où les parties des bandes de matériau qui s'étendent le long des surfaces du panneau s'étendent sur trois éléments d'âme ou plus.
  2. Panneau selon la revendication 1, où les bandes de matériau (2, 2', 2", ...) comportent une partie s'étendant sur un élément d'âme proche (1, 1', 1", ...) et le long d'une surface du panneau, ainsi qu'une partie s'étendant sur l'autre élément d'âme proche (1, 1', 1", ...) et le long de l'autre surface du panneau.
  3. Panneau selon la revendication 1 ou 2, où des bandes de matériau (2, 2', 2", ...) s'étendent sur un même élément d'âme proche (1, 1', 1", ...) et le long des deux surfaces du panneau.
  4. Panneau selon l'une des revendications 1 à 3, où les bandes de matériau (2, 2', 2", ...) comportent une partie située entre deux éléments d'âme proches (1, 1', 1", ...) et s'étendant uniquement sur une partie de ces éléments d'âme (1, 1', 1", ...), ainsi qu'une partie s'étendant uniquement le long d'une surface du panneau.
  5. Panneau selon la revendication 4, où les éléments d'âme (1, 1', 1", ...) proches des deux surfaces du panneau sont pourvus d'une bande de matériau (2, 2', 2", ...) qui comprend une partie située entre deux éléments d'âme (1, 1', 1", ...) proches et ne s'étendant que sur une partie de ces éléments d'âme (1, 1', 1", ...), ainsi qu'une partie s'étendant uniquement le long d'une surface du panneau.
  6. Panneau selon la revendication 5, où les parties de deux bandes de matériau (2, 2', 2", ...) qui s'étendent respectivement entre deux éléments d'âme (1, 1', 1", ...) proches sont recouvertes par une bande de liaison située entre ces éléments d'âme (1, 1', 1", ...).
  7. Panneau selon l'une des revendications précédentes, où les bandes de matériau (2, 2', 2", ...) sont fixées les unes aux autres avec un agent d'imprégnation durci.
  8. Procédé de fabrication d'un panneau selon la revendication 2, comprenant les étapes suivantes :
    - la fourniture d'un élément d'âme (1),
    - le revêtement de cet élément d'âme (1) par une bande de matériau souple imprégnable (2) qui se prolonge transversalement à la direction longitudinale de l'élément d'âme (1) jusqu'au-delà de cet élément d'âme (1),
    - la fourniture d'un élément d'âme suivant (1') à côté de l'élément d'âme recouvert précédent (1) et sur la partie (11) de la bande de matériau souple (2) recouvrant cet élément d'âme précédent (1) qui se prolonge au-delà de l'élément d'âme précédent (1),
    - le revêtement de l'élément d'âme suivant (1') par une bande de matériau souple suivante (2') qui se prolonge transversalement à la direction longitudinale de l'élément d'âme suivant (1') jusqu'au-delà de cet élément d'âme suivant (1'),
    - ladite au moins une répétition de l'étape de fourniture d'un élément d'âme suivant (1"), l'étape de mise en place de cet élément d'âme suivant (1") à côté d'un élément d'âme recouvert précédent (1') et sur cette partie (11') de la bande précédente de matériau souple (2') recouvrant l'élément d'âme précédent (1') qui se prolonge au-delà de l'élément d'âme précédent (1'), ainsi que l'étape consistant à recouvrir l'élément d'âme suivant (1") avec un bande de matériau souple (2") suivante qui se prolonge transversalement à la direction longitudinale de l'élément d'âme suivant (1") jusqu'au-delà de cet élément d'âme suivant (1"),
    - l'imprégnation des bandes de matériau (2, 2', 2", ...) avec un fluide durcissable,
    - le durcissement des bandes de matériau imprégnées (2, 2', 2", ...), caractérisé par :
    - le placement de la bande de matériau souple (2") suivante sur la face supérieure (5") de cet élément d'âme suivant (1"), ainsi que sur au moins deux bandes de matériau souple précédentes (2, 2') s'étendant sur les faces supérieures (5,5') de deux ou plusieurs éléments d'âme précédents (1, 1').
  9. Procédé de fabrication d'un panneau selon la revendication 8, comprenant les étapes suivantes :
    - le positionnement d'un élément d'âme (1) dans un gabarit (4),
    - le placement d'une bande de matériau souple imprégnable (2) sur la partie inférieure (3) du gabarit (4) qui jouxte cette face latérale (6),
    - le positionnement d'un élément d'âme suivant (1') dans le gabarit (4) sur le matériau souple (2, 11) qui recouvre ladite partie inférieure (7),
    - le placement d'une bande de matériau souple (2') suivante sur la partie inférieure (3) du gabarit (4) qui jouxte cette face latérale (6').
  10. Procédé selon la revendication 8 ou 9, comprenant l'étape de :
    - placer la bande de matériau souple (2') suivante sur la bande de matériau souple (2) précédente s'étendant depuis un élément d'âme (1) précédent sous la face inférieure (8') et dépassant la face latérale (6') de l'élément d'âme suivant (1').
  11. Procédé selon l'une des revendications 8 à 10, comprenant les étapes d'utilisation de bandes de matériau souple qui comprennent un tissu, et d'alignement des fils dans la direction longitudinale des éléments d'âme.
  12. Procédé selon l'une des revendications 8 à 11, comprenant les étapes d'utilisation de bandes de matériau flexible qui comprennent un tissu, et d'alignement des fils du tissu dans la direction transversale des éléments d'âme.
  13. Procédé selon l'une des revendications 8 à 12, comprenant les étapes suivantes :
    - placer une bande de matériau souple,
    - directement après la mise en place de cette bande de matériau souple, imprégner celle-ci,
    - placer ensuite un élément d'âme suivant,
    - placer une bande de matériau souple suivante,
    - directement après la mise en place de cette bande de matériau souple, imprégner celle-ci.
  14. Procédé de fabrication d'un panneau selon l'une des revendications 1 à 7, comprenant les étapes suivantes :
    - la fourniture d'un élément d'âme (1),
    - le revêtement de cet élément d'âme (1) par une bande de matériau souple imprégnable (2) qui se prolonge transversalement à la direction longitudinale de l'élément d'âme (1) jusqu'au-delà de cet élément d'âme (1),
    - la disposition d'un élément d'âme suivant (1') sur l'élément d'âme recouvert précédent (1) et sur la bande de matériau souple précédente (2),
    - le revêtement de l'élément d'âme suivant (1') par une bande de matériau souple (2') suivante qui se prolonge transversalement vers la direction longitudinale de cet élément d'âme suivant (1') jusqu'au-delà de cet élément d'âme suivant (1'),
    - ladite au moins une répétition de l'étape de fourniture d'un élément d'âme suivant (1"), l'étape de mise en place de cet élément d'âme suivant (1") sur un élément d'âme précédent et une bande précédente de matériau souple (2') recouvrant l'élément d'âme précédent (1'), ainsi que l'étape consistant à recouvrir l'élément d'âme suivant (1") avec une bande suivante de matériau souple (2") qui se poursuit transversalement à la direction longitudinale de l'élément d'âme suivant (1") au-delà de cet élément d'âme suivant (1"), avec formation d'un empilement (12) d'éléments d'âme (1, 1', 1", ...) et de parties intermédiaires (10, 10', 10", ...) des bandes en matériau souple (2, 2', 2", ...)
    - la butée des parties (9, 9', 9", ..., 11, 11', 11", ...) des bandes de matériau souple (2, 2', 2", ...) qui s'étendent au-delà de l'empilement (12) contre cet empilement (12),
    - l'imprégnation des bandes de matériau (2, 2', 2", ...) avec un fluide durcissable,
    - le durcissement des bandes de matériau imprégnées (2, 2', 2", ...) en un produit fini (14), caractérisé par :
    - le placement de la bande suivante de matériau souple (2") sur un élément d'âme suivant (1"), ainsi que sur au moins deux bandes précédentes de matériau souple (2, 2') s'étendant sur deux ou plusieurs éléments d'âmes précédents (1, 1').
  15. Procédé selon la revendication 14, comprenant les étapes suivantes :
    - la fourniture d'un gabarit (13) dont la forme intérieure épouse le contour du produit fini (14) à réaliser,
    - la mise en place du gabarit (13) sur l'empilement (12) et les parties (9, 9', 9",..., 11, 11', 11", ...) des bandes de matériau souple (2, 2' , 2", ...) qui s'étendent par rapport à cet empilement (12),
    - le durcissement des bandes de matériau imprégnées (2, 2', 2", ...) alors que le gabarit (13) est en position au-dessus de l'empilement (12).
EP09788236.9A 2008-07-18 2009-07-17 Panneau sandwich et procédé de production d'un panneau de ce type Active EP2303559B3 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200930270T SI2303559T1 (sl) 2008-07-18 2009-07-17 Sendvič plošča in postopek izdelave take plošče
PL09788236.9T PL2303559T6 (pl) 2008-07-18 2009-07-17 Płyta wielowarstwowa i sposób wytwarzania takiej płyty

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2001830A NL2001830C2 (nl) 2008-07-18 2008-07-18 Sandwichpaneel, alsmede werkwijze voor het vervaardigen van een dergelijk paneel.
PCT/NL2009/050445 WO2010008293A2 (fr) 2008-07-18 2009-07-17 Panneau sandwich et procédé de production d’un panneau de ce type

Publications (3)

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EP2303559A2 EP2303559A2 (fr) 2011-04-06
EP2303559B1 EP2303559B1 (fr) 2012-03-28
EP2303559B3 true EP2303559B3 (fr) 2023-03-29

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EP09788236.9A Active EP2303559B3 (fr) 2008-07-18 2009-07-17 Panneau sandwich et procédé de production d'un panneau de ce type

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US (2) US20110165385A1 (fr)
EP (1) EP2303559B3 (fr)
CN (1) CN102143836B (fr)
AT (1) ATE551176T1 (fr)
AU (1) AU2009271785B2 (fr)
CA (1) CA2731211C (fr)
DK (1) DK2303559T6 (fr)
EA (1) EA019588B1 (fr)
ES (1) ES2384154T7 (fr)
FI (1) FI2303559T6 (fr)
HK (1) HK1156281A1 (fr)
HR (1) HRP20120525T1 (fr)
NL (1) NL2001830C2 (fr)
PL (1) PL2303559T6 (fr)
PT (1) PT2303559E (fr)
SI (1) SI2303559T1 (fr)
SM (1) SMT201200032B (fr)
WO (1) WO2010008293A2 (fr)

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Publication number Priority date Publication date Assignee Title
NL2005508C2 (nl) * 2010-10-13 2012-04-16 Fibercore Europ B V Sandwichpaneel met gekoppelde lijven.
NL2013887B1 (nl) 2014-11-27 2016-09-23 Fibercore Ip Bv Werkwijze voor het vormen van een kokervormig halffabricaat uit vezelversterkt kunststofmateriaal.
NL2018263B1 (nl) 2017-01-31 2018-08-16 Fibercore Ip Bv Aerodynamisch of hydrodynamisch blad uit gelaagd materiaal
CN114845858A (zh) * 2019-12-16 2022-08-02 光纤芯Ip有限公司 具有芯元件或空隙阵列和插入的片材的产品以及用于形成这种产品的方法
US20230347619A1 (en) 2020-06-26 2023-11-02 Fibercore Ip B.V. Composite structure, and methods for arranging webs and core elements in manufacturing of a composite structure
WO2022235149A1 (fr) 2021-05-03 2022-11-10 InfraCore IP B.V. Structure composée d'une pluralité de feuilles

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US2833682A (en) * 1953-11-30 1958-05-06 Laszlo Patrick David De Reinforced structures
US2873008A (en) * 1955-08-26 1959-02-10 Keasbey & Mattison Company Building panel units and roofs or walls made therefrom
US3185611A (en) * 1963-01-14 1965-05-25 C J Rodman Composite coreboard and process for producing same
US3795559A (en) * 1971-10-01 1974-03-05 Boeing Co Aircraft fluted core radome and method for making the same
GB2066731B (en) * 1979-11-28 1983-12-07 Nat Res Dev Conformable reinforcement board
WO1990009880A1 (fr) * 1989-02-24 1990-09-07 Giovanni Guarnaschelli Elements porteurs en plastique renforce
US5904972A (en) * 1995-06-07 1999-05-18 Tpi Technology Inc. Large composite core structures formed by vacuum assisted resin transfer molding
US20020090874A1 (en) * 2000-09-08 2002-07-11 Mckague Elbert L. Unitized fastenerless composite structure
EP1596024A1 (fr) * 2004-05-11 2005-11-16 Groep Stevens International, Naamloze Vennootschap Panneau sandwich renforcé
NL1031768C2 (nl) * 2006-05-08 2007-11-09 Fits Holding B V Hoogbelastbare sandwichstructuur, alsmede werkwijzen voor het vervaardigen daarvan.

Also Published As

Publication number Publication date
CN102143836A (zh) 2011-08-03
HK1156281A1 (en) 2012-06-08
DK2303559T6 (da) 2023-05-01
US10016948B2 (en) 2018-07-10
EA019588B1 (ru) 2014-04-30
NL2001830C2 (nl) 2010-01-21
US20110165385A1 (en) 2011-07-07
ATE551176T1 (de) 2012-04-15
EA201170226A1 (ru) 2011-10-31
US20150217521A1 (en) 2015-08-06
PL2303559T6 (pl) 2024-01-08
AU2009271785B2 (en) 2015-08-20
CN102143836B (zh) 2014-08-13
SI2303559T1 (sl) 2012-08-31
PL2303559T3 (pl) 2012-09-28
ES2384154T3 (es) 2012-07-02
AU2009271785A1 (en) 2010-01-21
EP2303559A2 (fr) 2011-04-06
SMT201200032B (it) 2012-09-07
ES2384154T7 (es) 2023-07-25
WO2010008293A3 (fr) 2010-06-17
WO2010008293A2 (fr) 2010-01-21
DK2303559T3 (da) 2012-07-09
CA2731211C (fr) 2017-06-20
CA2731211A1 (fr) 2010-01-21
EP2303559B1 (fr) 2012-03-28
FI2303559T6 (fi) 2023-04-27
HRP20120525T1 (hr) 2012-08-31
PT2303559E (pt) 2012-06-27

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